The cogs (gears) at the front of your drive chain, connected to the cranks.

learn more… | top users | synonyms

5
votes
2answers
168 views

How do I change the granny gear on a cheap Walmart mountain bike?

I have a cheap ($100) 26" Walmart mountain bike (Hyper Summit) that has a triple chainring (24,34,42). It appears there is no easy way to remove the granny gear since it has what looks like some type ...
2
votes
1answer
147 views

What needs to be changed if I put in a larger chainring?

My current bicycle is a 2013 Specialized Allez C2. It has an 8 speed rear cassette. If I swap the current chainring (50/32) to a larger one (52/36 OR 54/39), other than the chain itself, what else ...
0
votes
1answer
40 views

Trek 26" mtb disc, how to change up crank set /gear size? [duplicate]

What should I consider with regard to the front gear (derailleur) selector unit when changing up from a 42 to a 48 tooth crankset? I have changed a few similar cranksets but not done a gear ratio ...
2
votes
1answer
64 views

Can I use a SRAM X0 Crank with Shimano XT chain rings?

I have a SRAM X0 crank on my MTB, and I want to buy some Shimano XT chain rings from a mate. Will they fit? Or is the BCD, Spider shapre, bolt size etc incompatible. All are 10 speed.
3
votes
1answer
105 views

Chain coming off with internal hub gear bike - why?

I have a Raleigh Caprice bike, about 7 years old, with sturmey archer 3 speed hub gears. There have been some problems with the hub gears in the past 9 months, which have been fixed by a mechanic. ...
3
votes
2answers
59 views

Converting triple crank to single or double

I got triple crank (44-32-22) and 3x9 speed drivetrain. What will I need and is it possible to remove some of the chainrings and convert the crank to single or double? Will I need new parts or ...
4
votes
1answer
234 views

Why is my electric bike 'clanking' under load?

I have a Giant Esprit Twist Power electric bike, which apart from not having nearly enough words in its name also has a problem related to the crank. When I put a lot of load through the pedals there ...
4
votes
1answer
14k views

Shimano Chainring Compatability

In my previous question we determined that I probably need new chainrings. I was/am planning on replacing the chainrings, and leaving the original crank. Now this bike is running Shimano 105 FC-5600 ...
1
vote
2answers
205 views

How to change 2x11 to 3x11 on mtb

Hey I was wondering how you would change a chainset from 2x11 to 3x11 on a Carrera Fury (SRAM components) Thanks
2
votes
4answers
96 views

is this cassette and chain ring combination good in terms of number of teeth?

I recently bought a used bike which has a shimano alivio 8 speed gearset. When I look at the drivetrain, it really looks small to me. Below are the size of them in terms of the number of teeth: ...
12
votes
4answers
761 views

Why use multiple materials on chainrings?

Why is it that on a typical mid-level road triple crankset, the outer rings (larger rings) will be aluminum, while the inner ring (small ring) is chro-mo? It seems to me that if aluminium was good ...
7
votes
3answers
639 views

Do aluminium chainrings/cassettes contribute to chain wear?

In trying to achieve a long lasting, low maintenance drivetrain, I've read statements about aluminium oxide being the source of the black colour of chain dirt and also being highly abrasive: ...
0
votes
3answers
87 views

Can I ride a triple front chainring with no front deraileruer

I've managed to strip the threads on my front deraileruer mechanism. Its off the bike now - can I ride it as-is until I locate a new front mechanism? The chain does stay on the front chainring where ...
4
votes
3answers
171 views

Could I use a 30 tooth chainring with my current crankset?

a few months back I installed a 34 tooth narrow-wide chainring in my Santa Cruz Bronson. I decided to install the 34 tooth chainring, basically, because I couldn't fit any other smaller chainring ...
2
votes
2answers
117 views

triple chainring with with single speed freewheel

I have a Hero Sprint Axis (with 18T freewheel).I ride mostly on flat roads, but want more top speed and a lower gear for starting from standstill. Is it possible to just install a triple chainring ...
3
votes
1answer
60 views

Shimano Sora 3500 (3x9) and Alivio front derailleur

Please help rebuild my bike :) I have Scott Sub 30 2011 http://www.evanscycles.com/products/scott/sub-30-2011-hybrid-bike-ec025449 and right now I would like to change shifters to Shimano Sora 3500 ...
9
votes
3answers
557 views

How do I tell if my cog needs replacing?

Two answers to this question gather that after 14335 km (8907 mi) of cycling with a single chain, the cog is at risk of being damaged. I haven't noticed anything unusual apart from the chain being ...
2
votes
5answers
5k views

Why use 54T (or bigger) chainring?

In time trial races, I see people are using these big chainrings. Is 50/11 combination doesn't give enough top speed? What's the real advantage? I can only think of the negative, which is it makes the ...
1
vote
1answer
132 views

Can I replace my Shimano outer chain ring with a SRAM?

I need to replace my outer chain ring. I am currently running a 50t, I'm pretty sure it's a 130 BCD. I am considering a SRAM Outer chain ring as a replacement. I assume as long as measurements are ...
1
vote
2answers
247 views

what is the biggest chainring I can put on my mountain bike?

I am going to do a 'gravel grind' ride with lots of elevation gain and want to be able to keep up with the cyclocross bike riders. From what I understand they have 46/36 chainrings. My mountain bike ...
2
votes
1answer
276 views

Are chain ring spacers a good solution to adjust chain line?

I recently converted my mountain bike from a 2x10 to a 1x10. I have a Shimano XT Hollowtech ii crankset and I like it a lot, but its traditionally a 2 speed crankset. When I'm in my 1st gear on the ...
1
vote
1answer
43 views

How do you remove the sprocket from an eighthinch splined BMX style crankset?

I have the EighthInch Freestyle Splined Crankset. These are very similar to profile bmx cranksets. I purchased a larger sprocket to use with the crankset. I've used a crank puller to remove the drive ...
1
vote
3answers
55 views

Campagnolo chainring bolt stuck to crank

I have a Campagnolo 11 speed Athena setup. I am enjoying a noisy creak which I suspect is located in my chainring bolts. I have replaced all of them, except the one that screws the chainring to the ...
2
votes
1answer
103 views

Front shifter has three positions, but front chainring is only double. Is this a problem?

My Merida Cyclocross 3 bike has a double chainring at the front. After a few weeks of being a little annoyed about the awkward shifting when going up steep hills, I realized that the front shifter and ...
1
vote
2answers
111 views

Can I install a double chainset on a bike that was originally designed for a triple chainset?

I have a BTwin Triban 3 which has a triple chainset that needs replacing. I am thinking of replacing it with a double chainset this time. Is this possible, or do I need new shifters and a different ...
3
votes
6answers
900 views

What is the easiest to upgrade my chainrings from a double to a triple?

I have a 2007 Specialized Tarmac Pro Double and I need some better gearing. I am doing more hill climbs and I feel that I need at least two lower gears than I already have. What would be the most ...
1
vote
2answers
185 views

Which chainring? Shimano M785

So I've never changed a chainring before. But the first step is finding the right one. I have a Cube Hyde SL 2012 . It describes the crankset as Shimano Deore XT FC-M785 Hollowtech II 42x26T., ...
0
votes
1answer
158 views

Are Osymetric chainring and power2max Classic power meter compatible?

I'm thinking about trying the famous Osymetric chainrings, and I would like to use it with a power2max Classic power meter. I just want to be sure that there are compatible? It's very difficult to ...
1
vote
2answers
67 views

Chain Slip at front changing from large to small front chain wheel (with large cog at back)

I have a Pinnacle Neon 3 Hybrid, Shimano Sora 9 speed cassette and 2 chainrings at the front. The bike is 2 weeks old and I've cycled around 65 miles so far. Chain ring has come off 3 times at the ...
2
votes
1answer
210 views

Upgrading from 50/34 to 50/39 with Shimano Sora?

I have a road-biased hybrid that came with a compact 110mm BCD 50/34 Shimano Sora crankset and chainrings. I'd like to upgrade the inner ring to 39, but I'm having some trouble figuring out what to ...
0
votes
1answer
30 views

Can I add 3rd chainring to a an old Sugino double?

I have a vintage (165mm-Crnk) Sugino 40/48 on here now, but am looking to add some gear range for up hill with med-sm load. I have a Tiagra short cage RD and a Sora double FD. I am friction shifting. ...
0
votes
2answers
198 views

Race Face Crank/Chainring Compatibility

I have a Race Face Evolve DH crankset which takes 104 BCD chainrings. However, I pulled a 104 BCD chainring off a Shimano Acera Crankset and the rings don't interface properly with the Race Face ...
0
votes
1answer
98 views

What symptoms can I expect from two broken teeth on a chainring?

Dealing with chain skipping (but mostly on the smaller chainrings, truth be told) I've wondered how these affect the riding and how many problems and what kind should i expect from these two broken ...
4
votes
1answer
122 views

'1 1/8' vs '1/2 1/8' chain/chainring

Some 1/8 chains and chainrings are sold as "1/2 1/8" and some as "1 1/8". What is the first number describing? My understanding is that practically all modern chains have a 1/2 inch pitch.
4
votes
2answers
498 views

Chain drops in smallest gear under load

I'm baffled. I installed a new chain, cassette, cables and housing yesterday. On the stand, all is happy and shifting is silky smooth. On the road all seems happy except on the bigger cogs in back (in ...
2
votes
2answers
108 views

What gears should I go for?

I have a Trek road bike (although you might call it a hybrid since it has straight handlebars. I do about 3,000 miles per year on it for general health reasons (up to 30 miles at a time and averaging ...
1
vote
2answers
130 views

Should I switch to a smaller chain ring?

I am back to cycling after 7 years absence due to injury and time commitments. When I started 3 months ago I weighed 20kg more (105 kg in total) than when I stopped. My target is to build fitness ...
6
votes
2answers
524 views

Can I replace a middle chain ring with one with different number of teeth?

I recently upgraded my wife’s bike with a Shimano XT triple crankset. The number of teeth is 44.32.22t. However, the middle chainring on the recent XT crankset is carbon-reinforced, and I’d prefer not ...
0
votes
2answers
233 views

cannondale cadd10 105 crankset replacement

I had a terrible crash on my Cannondale CADD10 105 (11spd) and wrecked the crankset (the bigger ring bent). It is FSA Gossamer Pro, BB30, 52/36 from the website. Is there an identical one available ...
1
vote
2answers
154 views

Why is my big chainring is so scratched form the inside?

I have noticed a lot of scraping on the inside of my Trushift 44T plate. Is it just a function of distance, time and color or is it a clue that something is not working properly? The bike was bought ...
0
votes
1answer
1k views

Can I use 11 speed chainrings with 9 speed chain?

To be more specific, my bike come with Shimano Sora 9 speed group set. I'm using a KMC X9 9 speed chain. I studied quite a lot of websites. They claim that chainrings are compatible with any speed of ...
2
votes
1answer
142 views

Choosing chainring configuration

I'm interested in how I would choose a chainring configuration, supposing I was either replacing mine or building a new bike for a similar usage. I have a 50/39/30 triple chainring (& 10-speed ...
28
votes
15answers
46k views

Triple vs Double chainring?

I'm bike shopping for my first road bike, and I've asked for a lot of advice from my father who was a serious cyclist once upon a time. After showing him one prospective bike, he dismissed it with a ...
0
votes
0answers
613 views

Replacement crankset for Shimano SG B 52/39?

I have a very basic Specialized Allez (XL frame) street bike (pictured in my avatar) with a cheap SG B52/39 chainring needing replacement (warped and wearing out after two years of daily use). But ...
0
votes
1answer
166 views

Shimano FC-M521 middle chainring replacement

What exact torque should be applied to secure the double gear fixing bolt (Y-1FM98020) ? And what tool is usually used to fix the nut without damaging it while tightening the bolt?
2
votes
4answers
743 views

Do I have to stop pedaling when shifting up the front chainring?

If I keep pedaling when shifting up the front chainring, it would fail. Moreover, the chain keeps rubbing with the chainrings and produces many noises. Thus, I have to stop pedaling for around one ...
10
votes
6answers
12k views

Mysterious case: chain falling off large chainring, how to fix?

On my commuter bike I decided to rid myself of the small inner chain ring (which is almost never used) and front dérailleur (now redundant). However, I have come across an unusual problem. Whilst ...
7
votes
3answers
11k views

How do I calculate the diameter of a chainring from the number of teeth?

Simply knowing the number of teeth on a chainring can we determine an accurate diameter?
5
votes
3answers
2k views

Chain slipping on middle chainring

I have recently replaced the chain and the cassette. Previous chain never slipped. I never had any problems with it at all. But I have made about 10 000 km on it and the wear was beyound any limits, ...
3
votes
2answers
198 views

Is it possible to use a two or three chainring with an internal hub?

I have a Bullit cargo bike. It has a Shimano 39t chainring and a Alfine 8 rear hub. I was going to go for a Rohloff to get more gears, but the price is just getting stupid. I looked at the Alfine 11 ...